This visualization shows the sales of cars in India from 2009 to 2019, combining a smooth line chart with a filled area beneath it to emphasize the upward trend over time. The chart uses D3 v5’s `scaleTime`, `scaleLinear`, `line`, and `area` generators with `curveBasis` for curved interpolation, and renders as SVG. Axes are created with `axisLeft` and `axisBottom`, with grid lines and formatted tick labels. Data is loaded from a CSV via `d3.csv` and parsed into date and numeric values for plotting.